Pretreatment device and soil remediation method using same
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A pretreatment device and soil technology, applied in the field of soil remediation, can solve the problems of workers' health hazards, noise pollution, energy consumption, etc., and achieve the effects of comprehensive and thorough restoration, improved quality, and improved efficiency.
Inactive Publication Date: 2020-05-29
顺茂环境服务(上海)有限公司
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However, in the actual production process, vibration often produces loud noises, leading to noise pollution. If workers use the equipment for a long time, it will also cause harm to workers' health, and because part of the energy is consumed to alleviate the vibration caused In terms of inertia, so in order to achieve the same screening effect as other methods, more energy needs to be consumed, which is inconsistent with the concept of energy saving and emission reduction advocated by our country
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Embodiment 2
[0068] Embodiment two: a kind of pretreatment device and the soil remediation method using this device, and the difference of embodiment one is, comprise the following several steps:
[0069] Step 1: Use multi-point sampling method to investigate, measure and evaluate the polluted soil;
[0070] Step 2: Dig out the polluted soil, pave the excavated soil to a thickness of 3cm-5cm, and spray the excavated soil with water at a rate of 1L / ㎥. Then it is dried, the drying temperature is controlled at 80°C, and the drying time is controlled at 2h. After drying, it is left to stand for 40min to keep the soil humidity at 60%;
[0071] Step 3: Use the slope feeding mechanism 1 to transport the soil into the crushing cylinder 32, the crushing blade 33 in the crushing cylinder 32 crushes the soil, the speed of the crushing blade 33 is controlled at 800rpm, and the crushed soil falls to the screening mechanism 4, the eccentric structure 7 drives the first sieve plate 42, the second sieve ...
Embodiment 3
[0075] Embodiment three: a kind of pretreatment device and the soil remediation method using this device, and the difference of embodiment one is, comprise the following several steps:
[0076] Step 1: Use multi-point sampling method to investigate, measure and evaluate the polluted soil;
[0077] Step 2: Dig out the polluted soil, pave the excavated soil to a thickness of 4cm, and spray the excavated soil with water at a rate of 0.8L / ㎥, after spraying Dry it, the drying temperature is controlled at 70°C, and the drying time is controlled at 1.5h. After drying, let it stand for 35min to keep the soil humidity at 55%;
[0078] Step 3: Use the slope feeding mechanism 1 to transport the soil into the crushing cylinder 32, the crushing blade 33 in the crushing cylinder 32 crushes the soil, the speed of the crushing blade 33 is controlled at 700rpm, and the crushed soil falls to the screening mechanism 4, the eccentric structure 7 drives the first sieve plate 42, the second sieve ...
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Abstract
The invention relates to a pretreatment device and a soil remediation method using the same. The pretreatment device comprises a slope feeding mechanism used for feeding, a smashing mechanism used forsmashing soil, a screening mechanism used for screening the soil and a discharging mechanism used for discharging the screened soil, wherein the screening mechanism comprises a screening support, a first screening plate, a second screening plate and a third screening plate are sequentially installed on the screening support, screen meshes with different hole diameters are installed on plate bodies of the first screening plate, the second screening plate and the third screening plate respectively, and an eccentric structure for driving the first screening plate, the second screening plate andthe third screening plate to achieve eccentric motion is installed on the screening support. The soil remediation method comprises the following steps: soil is collected, sprayed, wetted and dried, then treated through the pretreatment device, flushed through a metal remediation agent and an organic matter remediation agent and finally dried and backfilled. The eccentric structure drives the screening mechanism to screen soil, noise in the screening process is reduced, and soil screening is more thorough through multi-stage screening.
Description
technical field [0001] The invention relates to the technical field of soil remediation, in particular to a pretreatment device and a soil remediation method using the device. Background technique [0002] According to the "National Soil Pollution Survey Bulletin" released in 2014, the overall soil environment in China is not optimistic, and the national soil pollution rate exceeds the standard by 16.1%. While the soil environment problems of industrial and mining wasteland are prominent, the soil environment quality of cultivated land is even more worrying. Soil pollution is divided into chemical pollution, physical pollution, biological pollution and radioactive pollution. Soil remediation refers to the use of physical, chemical and biological methods to transfer, absorb, degrade and transform pollutants in the soil, reducing its concentration to an acceptable level, or converting toxic and harmful pollutants into harmless substances. [0003] One of the remediation metho...
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